Goodwill Intangible Assets and Other Long Term Assets	12 Months Ended
Sep. 30, 2019
Goodwill Intangible Assets And Other Long Term Assets Disclosure [Abstract]
Goodwill Intangible Assets and Other Long Term Assets	7. GOODWILL, INTANGIBLE ASSETS, AND OTHER LONG-TERM ASSETS: In total, current and previous acquisitions have resulted in the recording of $27.5 million and $64.1 million in goodwill and other intangible assets as of September 30, 2018 and 2019, respectively. Our previous acquisitions and fiscal 2019 acquisitions have not resulted in recording any significant identifiable intangible assets besides goodwill. See Note 2 of the Notes to Consolidated Financial Statements for more information about our annual impairment tests of goodwill and recent acquisitions. Other long-term assets as of September 30, 2018 and 2019 of $5.6 million and $7.1 million, respectively, are primarily long term deposits and other long term investments.

Goodwill Intangible Assets and Other Long Term Assets

12 Months Ended

Sep. 30, 2019

Goodwill Intangible Assets And Other Long Term Assets Disclosure [Abstract]

Goodwill Intangible Assets and Other Long Term Assets

7. GOODWILL, INTANGIBLE ASSETS, AND OTHER LONG-TERM ASSETS:

In total, current and previous acquisitions have resulted in the recording of $27.5 million and $64.1 million in goodwill and other intangible assets as of September 30, 2018 and 2019, respectively. Our previous acquisitions and fiscal 2019 acquisitions have not resulted in recording any significant identifiable intangible assets besides goodwill. See Note 2 of the Notes to Consolidated Financial Statements for more information about our annual impairment tests of goodwill and recent acquisitions. Other long-term assets as of September 30, 2018 and 2019 of $5.6 million and $7.1 million, respectively, are primarily long term deposits and other long term investments.